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An estimate of heterosis in Drosophila melanogaster

Published online by Cambridge University Press:  14 April 2009

J. A. Sved
J. A. Sved
Affiliation:
School of Biological Sciences, University of Sydney, N.S.W. 2006, Australia
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Twenty-five population cages of D. melanogaster were set up, each containing a different wild-type second chromosome and the marker chromosome Cy. In all but one case where contamination apparently occurred, the Cy chromosome persisted in the population at high frequency, showing a selective advantage of Cy/ + heterozygotes over wild-type homozygotes. Overall, the results indicate that homozygosity of the entire second chromosome causes a depression in fitness of the order of 85%.

Type
Research Article
Information
Genetics Research , Volume 18 , Issue 1 , August 1971 , pp. 97 - 105
Copyright
Copyright © Cambridge University Press 1971

References

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